| Acronym | Meaning |
| PSIA | Pound Per Square Inch Absolute |
| FPE | Functional Program Element |
| GSI | Glide Slope Indicator |
| TG | Ground Systems (KSC Directorate) |
| LIM | Limit |
| HT | High Technology |
| BP | C&MControl And Monitoring |
| SVB | Shuttle Vehicle Booster |
| FUS | Fuselage |
| H | EPAHigh Efficiency Particle Air (Filter) |